Automatic needle changer for phonographs



vSept. 24, .1.929. KARAkAwA AUTOHATIC NEEDLE CHANGER FOR PHONOGRAPHS Filed Feb. 7, 1928 5 5hee\,s-Sheefl 1 m, n. N R m M m m A .QW nh Nw u www 1m ./Q mw ww m d u `111,]/7 N Illl Il H u ...HHHHHU z .J N. N.. .5.111. E .kan/.1.. .11. l1. N` .uw m u hk 1 ww www@ www n n NNN www .www @QH /l N QQ NQ WN m, A QN NQ NQ .@.NNN QN A .EN m. MNH bm, QNH Y @QN s n .new n @E NH 2 S., 2 NN .o NIRH hNHN 1 mm. BSH ,1 :MKB 1 Sept- 24, 1929 K. ARAKAWA 1,729,533 AUTOMATIC NEEDLE CHANGER FOR PHONOGRAPHS Filed Feb. 7, 192s 5 sheets-sheet 2 MMW/ -IIII I!! v 1 lu I ATTORNEY.

K. ARAKAWA AUTOMATIC NEEDLE CHANGER FOR PHONOGRAPHS sept. 24,' 1929.

Filed Feb. 7, 1928 5 ASheets-Shea?,

Sept. 24, 1929. K., ARAKAwA AUTouATIc NEEDLE CHANGER Fon PEoNoGRAPEs Filed Feb- 7. 1928 5 sheets-sheer 4 INVENTOR. Hofu mawa,

A TTORNE Y.

sept* 24,1929-l K. ARKAWA 1,729,533

ATOIATIC NEEDLE CHANGER FOR PHONOGRAPHS Filled Feb. 7. 192e s sheets-sheet 5 A TTO EY.

Patented Slept. 274, 19,29

UNITED STATES PATENT OFFICE AUTOMATIC NEEDLE CHANGER FOR PHONOGRAPHS Application filed February 7, 1928.

This invention relates to that class of sound reproducing machines wherein a stylus in connection with a diaphragm is adapted to coact with a record-groove yon the reproduction of sound, but more particularly to a stylus changing mechanism, and the invention has for its object to provide, in a manner as hereinafter set forth, a stylus changing mechanism constructed and arranged whereby the stylus may be automatically removed from its holder after reproduction of a recordand a new stylus automatically substituted for the old one. y

Further objects of the invention are to provide, in a manner as hereinafter set forth, a

stylus changing mechanism which is comparatively simple in its construction and arrangement, strong, durable, compact, thoroughly eiioientin its use, automatic in its action, readily assembled, and comparatively inexpensive to set up.

With the foregoing and other objects in view theinvention consists of the novel construction, combination and arrangement of parts as hereinafter vmore specifically described, and illustrated in the accompanying drawings, wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications :u can be resorted to which fall within the scope of the claims hereunto appended.

In the drawings wherein like reference characters denote corresponding parts throughout the several views:

3s Figure 1 is a sectional plan of a stylus changing mechanism in accordance with this invention illustrating the reproducer or sound box about to enter the mechanism for the purpose of changing the stylus.

1U Figure 2 is a fragmentary view in vertical section of va stylus changing mechanism in accordance with this invention.

Figure 3 is a view similar to Figure 2 with the reproducer or sound box in position to re- 15 ceive a new stylus.

Figure 4 is a side elevation of the mechanism illustrating the position of the reproducer or sound box with respect thereto to have the worn stylus pulled or removed therefrom.

Serial No, 252,552.

Figure 5 is a side elevation of the mechamsm partly broken away and in section illustrating the worn stylus pulled from the reproducer or sound box.

Figure 6 is a view similar to Figure 5 illustrating the position of the reproducer or sound box to receive a new stylus.

Figure 7 is a vertical sectional view of the stylus magazine.

Figure 8 is a view similar to Figure 7 and taken at right angles thereto.

Figure 9 is a side elevation of the reproducer or sound box.

Figure 10 is an edge View, partly in section of the reproducer or sound box.

Figure 11 is a top plan, partly in section of the reproducer or sound box.

Figures 12 and 13 are top plan views illustrating two positions of the stylus inserting device.

With reference to Figure 1 a phonographic record is indicated at 15, the tone arm of the machine at 16 and the reproducer or sound box at 17. As is well known the record 15 is mounted on a suitable turn table which is not shown.

With reference to Figures 1, 9, 10 and 11 the sound box 17 has suitably connected therewith a stylus lever 18 which coacts with the diaphragm 19. The lever 18 includes a holder for the stylus 2O and means for detachably securing the stylus 20 in its holder. As illustrated the lever 18 is provided at its lower end with a hollow extension 21 open at one side and at its bottom. Vithin the extension 21 is a transverse partition 22 providing the extension 21 with an upper socket 23 and a lower socket 24. The stylus 20 is arranged in the lower socket 24 and projects therefrom. lVithin the socket 23 is positioned a coiled con- .:f: trolling spring 25 for an angle shaped latching arm 26 which extends into the socket 24 and is pivotally connected, as at 27 to the front and walls of said socket 24. The arm 26 extends into the upper socket 23 and is enil: gaged by the outer end of the spring 25. The spring 25 acts to shift the lower portion of the latching arm 26 into the socket 24 and against the stylus 20 for the purpose of clamping the latter against the side wall of the 1.a;

socket 24 whereby the stylus 2() is detachably connected with the stylus lever 18. The latching arm 26 is adapted to be engaged, in a manner as hereinafter set forth, by suitable means for the purpose of shifting said arm in a direction to release the stylus 20.

Connected to and extended laterally from the sound b-ox 17 and spaced a substantial distance from the stylus lever 18, is a channel shaped member 28, having pivotally connected therewith as at 29 a spring controlled handle member 30 employed for moving the sound box or reproducer into and out of the stylus changing mechanism.

The stylus changing mechanism is arranged within and exteriorly of a housing secured to the reproducing machine adjacent the record 15, or rather adjacent the turn table upon which is mounted the record 15. The housing includes an arcuate front wall 31, a pair of side walls 32, 33 and a top 34. The rear portion of the housing is of less height than the forward portion thereof. rl`he wall 31 is provided in its lower part with an opening and above the latter with a lengthwise disposed slot 36 which extends from the inner end of the wall 31 and terminates at a point adjacent the other end thereof. The wall ,l 32 is formed with openings y37, 38 and 39.

The top 34 has an opening 40 surrounded by an upstanding flange 41. The forward part of the housing is of greater width than the rear part thereof or in other words theforward part of the inner side of the housing is offset with respect to the rear part. SeeLFigure 1. The forward part of the inner side or rather wall 33 of the housing is open so that the sound box 1 can be shifted therein. The slot 36 provides a clearance for the handle member 30 when the sound box is shifted-into and from the housing.

The stylus changing mechanism includes pulling and discharging devices for the stylus, and feeding and inserting devices for the stylus. The mechanism also includes a stylus magazine and a receiver for the worn stylusses, and said mechanism further includes structural elements which will be hereinafter referred to.

rlhe pulling and discharging devices for the stylus operate in conjunction with each other. rl`he pulling and discharging devices for the stylus are connected with a support which is pivotally attached to a carrier slidably supported within the housing. The car'- rier is spring` controlled and shifted in one direction by the sound box. With reference to Figure 2 the carrier includes a vertically disposed arm 41 terminating at its upper end in an inwardly extending right angularly disposed top arm 42 which merO'es into a depending outwardly inclined rear arm 43. The arm 41 is of greater length than the arm 43 and the latter is of greater length than the arm 42. The arm 41 is the front arm of the carrier and has formed integral therewith, intermediate its ends, a laterally disposed lug 44 which extends into the slot 36 and is engaged by the handle member 30 of the sound box 17 for the purpose of shifting the carrier. The arm 41 has formed integral therewith a pair of outwardly directed, superposed, spaced apertured lugs 45, 46 which are slidably mounted upon superposed track rails 47, 48 respectively, fixed to stationary brackets 49 secured to the inner face of the wall 31. rIhe rail 48 is arranged above the opening 35 in the wall 31 of the housing.

The support for the pulling and discharging devices for the stylus, with reference to Figures 4, 5 and 6, more particularly Figure 5 includes an upper arm 50 normally disposed at the same inclination as the inclination of the arm 43 of the carrier. The arm 50 ils pivotally connected at its upper end as at 51 to the `arm 43 of the carrier. See Figure 2. The arm 50 depends a substantial distance below said arm 43 and terminates in an arm 51 disposed at right angles with respect thereto and extending toward the wall 33 of the housing. The arm 51 terminates in a lower rarm 52 which depends from the arm 51. The lower end of the arm 52 is provided with a cam 53 for a purpose to be presently referred to. rlhat end of the arm 51 which terminates in the upper end of the arm 52 is provided with a laterally extending stop lug 54 for a purpose to be presently referred to. The normal position of the support for the pulling and discharging devices for the stylus is as shown in Figure 2. The stylus pulling device is spring controlled and pivotally connected to the arm 52 of the support or hanger for the pulling and discharging devices. The pulling device comprises an arm 55, pivoted intermediate its ends as at 56 to the arm 52 of the support or hanger. The arm 55 is spring controlled and its controlling spring is indicated at 57. One end of the spring 57 is anchored to the arm 51 of the support or hanger and the other end of the spring 57 is attached to the upper end of the arm 55. The upper end of the arm 55 is arrangedto engage the lug 54 to arrest the swinging of the pulling device when it is shifted by its controlling spring 57 to normal position. The arm 55 terminates at its lower end in an arm 58 of greater length than the arm 55 and extending in a direction towards the wall 32. The arm 58 has its free end provided with a cam 59 and extending from the arm 59 is a rearwardly disposed support 60 carrying a pair of opposed, spaced, resilient pulling fingers 61, 62 which extend toward the wall 33. Coacting with the cam 59 for the purpose of rocking the pulling device to the position shown in Figure 5 and against the action of the spring 57, is a shifting member fixed to the wall 31 and consisting of a vertical arm 62 terminating at its lower end in a rearwardly extending arm 63 arranged in the path of the cam 59 whereby when the latter rides against the arm 52 the pulling device will be shifted to the position as shown in Figure 5. The shifting member kwhich associates with the cam 59 is best shown in Figures 1, 4 and 5.

The discharging device for the stylus consists of an extension 64 which projects from the arm 52 of the support or hanger and is formed with a spreader member 65 adapted to extend between the pulling fingers 61, 62 for the purpose of spreading them to release the used stylus carried thereby. When the stylus is released from the pulling members f 61. 62 it is discharged into a container 66 arranged below the pulling and discharging devices when said devices are arranged in the position shown in Figure 5. As the sound box moves into the housing the stylus enters between the pulling fingers 61 and 62 and after the stylus is in the position as shown in Figure 4, the latching arm 26 will be shifted, by a means to be presently referred to, to release the stylus 20. As the sound box continues to move in a direction towards the wall 32, the cam 59 will ride against the arm 63 whereby the pulling device will be rocked on its pivot and shifted in a direction so that the spreading member will extend between the pulling members 61 and 62 and release the stylus so that it can drop into the receptacle 66.

Associated with the cam 53 of the support or hanger for the pulling and discharging devices for the stylus for the purpose of swinging said devices and their supports away from the stylus holder 21 so that a new stylus can be inserted is an upstanding shifting element 67 and which acts on the cam 53, to swing the support on its pivot 51, when the sound box is in the position shown in Figure 6.

Associated with the latching arm 26, for the purpose of shifting it to release the stylus 20 and further for maintaining the latching arm 26 in released position until a new stylus is inserted, is a vertically movable abutment member 68, provided at its lower end with a right angularly disposed nose 69. See Figure 2. The nose 69 is normally arranged in the path of the upper end of the latching member 26. See Figure 4. The vertically movable abutment member is slidably mounted in a plate 69 which is secured to the rear side of the arm 48 of the carrier. See Figure 2. The upper end of the abutment member 68 is provided with a head 7 0 for arresting the downward movement of said member. The means for vertically moving the abutment member 68, so that said member will clear the latching member 26, will be presently referred to.

The plate 69 carries a depending arm formed of an inclined upper part 71 and a perpendicular lower part 72 which at its lower end merges into a right angularly disposed extension 73 constituting a shut-ofi' for the feeding device for the stylus. The arm which depends from the plate 69 is spaced from and rearwardly of the pulling and discharging devices for the stylus.

Projecting from the arm 43 of the carrier in a direction towards the wall 81 of the housing is a lug 74 provided with a pin 75. See Figure 1. The pin 75 is employed for intermittently operating the feed for the stylusses from the magazine. The feed and the magazine will be presently referred to.

Secured to the lower end of the arm 41 of the carrier is a rack bar 76 which operates through the opening 38 and meshes with a gear wheel 77, which in turn meshes with a rack 78 operating through the opening 89. `When the carrier is shifted, the rack bar 76 is carried therewith and rotates the gear wheel 77 in a clock-wise direction and the gear wheel 77 meshing with the rack bar 78 vwill shift the latter in a direction opposite to that in which the rack bar 76 is shifted by the carrier. The gear wheel 77 is mounted on a shaft 80 supported by the front wall 31. A spacing to. The controlling spring for the carrier is .r

indicated at 82. See Figure 5. The spring 82 is connected at one end, as at 83 to the top of the carrier and at its upper end is anchored as at 85 to the wall 81. See Figures 2 and The spring 82 is arranged above the slot 86. The edges of the slot 36 are protected by channel shaped wear members 86. See ligure The magazine and stylus feed are best shown in Figures 7 and 8. The magazine is indicated at 87, is of rectangular contour, extends up through the opening 49 and is attached to the flange 41 in any suitable manner. The magazine has a hopper-shaped bot tom 88. formed with a discharge opening 89. The width of the magazine is substantially the same as the length of the stylus 20. The stylusses are oppositely disposed with respect to each other when supplied to the magazine. See Figure 7.

The feed comprises a cylindrical casing which is connected to the bottom of the magazine 87 and communicates with the discharge opening 89. The casing 90 terminates in the top of a tapered receptacle 91 which merges into a discharge spout 92. lithin the receptacle 91 is positioned an inverted V-shaped deflector 98 forming passages 94. Arranged within the casing 90 is a rotatable, cylindrical feed member 95 having` its periphery formed with lengthwise extending spaced notches 96 for the reception of a stylus 20. See Figure 8. The member 95 is fixed to a shaft 97 which extends through the casing` 90. One end of the shaft 97 is provided with a ratchet disc 98. Loosely mounted on the shaft 97, in-

lili) l shaft 114.

wardly with respect to the ratchet 98 isa disc 99 provided with a depending arm 100. Mounted on the shaft 97 and interposed between the disc 99 and the casing 90 is a coiled spring 101 for frictionally connecting the disc 99 to the ratchet 98. The disc 99 carries a pawl 102. See Figure 6. The pawl 102 engages with the ratchet 98 and shifts the shaft 97 when the arm 100 is engaged and shifted by the pin which projects from the lug 74 on the arm 43 of the carrier. rEhe spring 101 normally tends to maintain the arm 100 in the position shown in Figures 4 and 5. The

lspring' 101 is fixed to the casing 90 and also to the disc 99. rThe shape of the receptacle 91 is such as to provide for the stylus to assume the dotted line positions shown in Figure 7 whereby the stylus will be discharged from the spout 92 in an upright position. The extension or cutoff 73 coacts with the open end of the spout 92 for closing it to prevent a discharge of the stylus therefrom until said cutoif or extension 73 is moved clear of the outlet end ofthe spout 92. The stylus 20 is discharged from the spout 92 into the stylus inserting device and the latter is operated in a manner to position the stylus received thereby into the socket 24 of the stylus holder 21.

The stylus inserting' device, shown in Figures 1, 2, 3, 12 and 13 comprises a plate 102 pivoted at one end on a stationary pivot secured to the machine upon which the housing is mounted. rlhe plate 102 is substantially of y triangular contour and one corner of its broader end is pivotally connetecd as at 104 to the inner end of the rack bar 78. See Figure 2. The plate 102 is cut away at one side as at 105 and the edge of said cut away portion, at one end thereof, is formed with a pair of spaced, upstandingl lugsv 106 and also with a. stop lug 107. ySee Figures 12 and 13. Slidably mounted upon the plate 102 is a flat bar 108 provided with an angularly disposed bifurcated inner end portion 109 which stra-ddles the fixed pivot 103. The bar 108 is provided at its forward end with a triangular shaped head 110 formed with an iniclined slot 111 through which extends a guide pin 112 fixed to the machine upon which the housing is positioned. The bar 108 intermediate its ends has connected therewith a superposed barrel 113 which is spaced from the bar and has extending therethrough a Fixed to the shaft 114. at one end thereof, is an upwardly inclined arm 115, engaged by a means to be presently referred to for the purpose of rocking the shaft 114 in a direction to elevate a stylus inserting` lever 116 which is fixed to the other end of the shaft 114 and has its forward end provided with a socket 117 for the reception of the stylus from the spout 92. The head 110 has a rearwardly extending guide arm 118 which operates between the lugs 106. The stop lug 107 is provided to limit the downward movement of the arm 115. See Figure 12.

The operating'means for the stylus inserting device as well as the means for elevating the abutment member 68 not only includes the rack bars 76 and 78 and gear wheel 77, but also includes a lifting element consisting of a bar formed of a pair of arms 119 and 120 disposed at right angles to each other. See Figure 1. The arm 119 is positioned in proximity to the wall 32 of the housing and the arm 12.0 projects inwardly from saidwall. Formed integral with the arm 119 and disposed at an angle with respect thereto and arranged rearwardly ofthe arm 120 is a lift ing member 121 for the arm 115. Formed integral with the arm 120 and extending up wardly therefrom is a curved lifting member 122 for the abutment member 68. The member 122 has a lateral lug 123 engaging the abutment member 68 to lift the same when the member 122 is elevated.

Extending through the wall 32 is a rock shaft 124. The shaft 124 extends through the opening 37. The arm 119 of the lifting element is fixed to the inner end of the shaft 124. The outer end of the shaft v124 has fixedly securedthereto an upstanding crank arm 125. See Figure 2. The upper end of the crank arm 125 is bifurcated as at 126. See Figure 4. A controlling spring 127 is provided for the crank arm 125 and said spring is connected to the upper end of the arm 125 and also to the wall 32 of the housing. See Figures 1 and 4. Secured to the wall 31 and arranged in alignment with the `slot 36 is a pair of guides 128. cdee Figure 4. Slidably mounted in the guides 128 is a shifting bar 129 which has its inner end engaged by a right angular extension 130 on the lug 44. See Figure 1. Supported from the wall 32 of the housing is a bracket 131, in which is mounted a vertically disposed shaft 132, provided at its upper end with a crank arm 133, which is pivotally connected, as at 134 to the outer end of the vrod 129. See Figure 4. The lower end of the shaft 132 carries a crank arm 135, which is pivotally connected at its outer end, as at 136, to one end of an elongated link 137. The

bifurcated upper end 126, of the crank arm 125, is pivotally connected as at 138 to the other end of the elongated link 137.

The normal position of the stylus inserting vdevice is as illustrated in Figure 12. When the rack bar 78 is, shifted from the gear wheel 77, the stylus insert-ing device will assume the position shown in Figure 13 and the arm 115 will ride over the lifting member 121. W hen the arm 115 is positioned over lifting member 121,the stylus pulling and discharging devices will be in the position as shown in Figure 3, as by this time the cam 53 has been engaged by the shifting member 67. It is to be understood that the discharge spout 92 is not closed until the sound box is moved into the housing and shifts the carrier so as to arrange the shut-o 7 3 across the mouth of the spout 92. It will also be assumed that a Stylus 20 has been supplied to the socket 117. As the carrier moves inwardly it will engage the rod 129 and provide for the rocking of the shaft 124 in a direction to elevate the lifting element and which in turn will provide for the lifting member 121 engaging under the arm 115 to rock the shaft 114, whereby the lever 116 will be swung upwardly to the position shown in Figure 3 and the stylus will be inserted in its holder. At this time the abutment member will be elevated so that the latching member can engage the stylus and firmly grip it in tli holder therefor. Vlien the sound boi; is moved in a direction towards the disc 15 the controlling springs will shift the carrier in the saine direction and restore the several elements to normal position.

Arranged in the path of the handle member 30 is a spring controlled clutching and unclutcliing device 139 for the platform which carries the disc 15. The mechanism 139 includes a bell crank 140 capable of being operated in one direction when the sound box moves into the housing and in the other direction when the sound box moves out of the housing. @ne of the arms of the bell crank lever 140 extends across the slot 36 in the path of the handle member of the sound box..

The device 139 is arranged at the front of the wall 31 of the housing and as illustrated is shown in position to uiiclutcli the platform from its driving means. The driving means for the platform is not shown.

The bars 47, 48, rod 129, and racks 7 6 and 78 are of arcuate contour and the front wall of the housing is also of such contour. See Figure 1. Then the handle member 30 engages tlie lugs 44, said member 30 assumes the dotted line position shown in Figure 1.

The arrangement of the stylus changing mechanism is such that the. stylus is pulled from its holder and discharged into the receptacle 66 as the sound box is kmoved toward the outer side wall of the housing and after which the stylus is inserted ink its holder. The stylus inserting device normally ispositioned relative to the spout 92 so as to receive a stylus therefrom into the socket 117 when the carrier is in its normal position and such position is as illustrated in Figure 4. As the carrier moves to its initial position, due to its controlling spring 82, the rack 76 will be moved inwardly in the housing and the rack 39 outwardly whereby the stylus inserting device will be shifted to normal position, as well as the lifting element which is provided with the lifting members 121 and 122. The controlling spring 127 also tends to shift the shifting element to its normal or lowered position.

1t is thought the man-y advantages of a stylus changing mechanism for the purpose set forth and in accordance with this invention, can be readily understood, particularly in view -of the fact that it is automatic in its action in removing a used stylus and inserting a new stylus in the stylus lever or sound box, and although the preferred embodiment of the invention is as illustrated and described, yet it is to be understood that changes in the details of construction can be had which fall within the scope of the invention as claimed.

lVhat I claim is:

1. A stylus changing mechanism comprising stylus pulling and discharging devices coacting with each other, a common support therefor, a stylus retaining means, releasing means therefor, a shiftable carrier common to said support and releasing means, a stylus inserting device, a stylus feeding device, operating means for and a shut-olf for the feeding device connected to the carrier, and operating mechanism common to said inserting device and releasing means actuated from said carrier. p

2. A stylus changing mechanism comprising a pivoted spring controlled stylus pulling device, a stylus discharging device coacting with said pulling device to discharge the stylus therefrom, a common support for said devices, a stylus retaining means, releasing means therefor, a shiftable carrier common to said support and releasing means, said support pivoted to said carrier, means for shifting the support on the carrier, a pivoted stylus inserting device, a stylus feeding device coacting with said inserting device and includng a shut-off, said shut-off connected to thc carrier, operating means on the carrier for the feeding device, and operating mechanisni common to said inserting device, said retaining means actuated from said carrier.

3. A stylus changing mechanism comprising a pivoted, spring controlled stylus pulling device, a stylus discharging device arranged in the path of the pulling device and providing for the discharge of the stylus from the latter, a common support for said devices, a stylus retaining means, releasing means therefor, a spring controlled sliiftable carrier common to said support and releasing means, a pivoted stylus inserting device, a stylus feeding device coacting with said inserting device and including a shut-off, said shut-oli' connected to the carrier, operating means on the carrier for said feeding device, spring controlled operating mechanism common to said inse 1ting device and releasing means and actuated from the carrier, means for pivotally connecting said support to the carrier, and means for shifting said support on the carrier.

4. In a stylus changing mechanism stylus pulling and discharging devices arranged one above t ie other and providing for successively remov ng the stylus from its holder and for the pulling device on its pivot against the action of its controlling spring.

5. In a stylus changing mechanism stylus pulling and discharging devices arranged one labove the other and providing for successively removing the stylus from its holder and for discharging same, a common support 'for said devices, said pulling device being pivoted to said support, a spring for controlling the pulling device, said discharging del vice being fixed to said support and adapted ried by saidbar, a lifting arm on one end of v to extend through the pulling device to discharge the stylus therefrom When the pulling device is shifted on its pivot, and means for shifting the pulling deviec on its pivot against the action of its controlling spring, said pulling device including a pair of spaced,

opposed, resilient pulling lingers for gripping the stylus, and further including a cam engaged by said means for shifting the pulling device on its pivot to move it in the path of the discharging device.

6. In a stylus changing mechanism, a stylus holder, stylus pulling and discharging devices arranged one above the other and providing for successively removing the stylus from its holder and for discharging saine, a common support for said devices, said pullingl device being pivoted to said support, a spring for controlling the pullingdevice, said discharging device being fixed to said support and adapted to extend through the pulling device to discharge the stylus therefrom vvhen the pulling device is shifted on its pivot, means for shifting the pulling device on its pivot against the action of its controlling spring, a shiftable carrier for said support, means for pivotally connecting the support to the carrier, and means for shifting the support on its pivot to swing said devices clear of the stylus holder.

7 In a stylus changing mechanism, a stylus holder, a stylus changing device comprising a shiftable plate pivoted at one end, a bar arranged upon said plate and having an angularly disposed bifurcated end slidable againstthe pivot of said plate, a shaft carthe shaft, a stylus inserting lever on the other end of said shaft, means connected to the other end of the plate for shifting it to arrange said lever in stylus inserting position, and means engaging with said arm for rocking the shaft to provide for the operation of said lever to insert a stylus Within the holder therefor.

8. In a stylus changing mechanism, a stylus holder, a stylus changing device comprising a sliiftable plate pivoted at one end, a bar arranged upon said plate and having an angularly disposed bifurcated end slidable against the pivot of said plate, a shaft carried by said bar, a lifting arm on one end of the shaft, 'a stylus inserting lever on the other end of said shaft, means connected to the other end of the plate for shifting it to arrange said lever in stylus inserting position, means engaging With said arm for rocking the shaft to provide for the operation of said lever to insert a stylus Within the holder therefor, and said lever provided With a socket to receive the pointed end of the stylus to be inserted.

9. In a stylus changing mechanism, a stylus holder, a stylus changing device comprising a shiftable plate pivoted at one end, a bar arranged upon said plate and having an angularly disposed bifurcated end slidable against the pivot of said plate, a shaft carried by said bar, a lifting arm on one end 0f the shaft, a stylus inserting lever on the other end of said shaft, means connected to the other end of the plate for shifting it to arrange said lever in stylus inserting position, means engaging with said arm for rocking the shaft to provide for the operation of said lever to insert a stylus Within the holder therefor, and said lever provided with a socket to receive the pointed end of the stylus to be inserted, combined With means for intermittently feeding a stylus in an upright position to said socket.

10. In a stylus changing mechanism, a stylus holder, a stylus changing device comprising a shiftable plate pivoted at one end, a bar arranged upon said plate and having an angularly disposed bifurcated end slidable against the pivot of said plate, a shaft carried by said bar, a lifting arm on one end of the shaft, a stylus inserting lever on the other end of said shaft, means conected to the other end of said shaft, means connected to the other lever in stylus inserting position, means engaging With said arm for rocking the shaft to provide for the operation of said lever to insert a stylus Within the holder therefor, said lever provided With a socket to receive the pointed end of the stylus to be inserted, combined with means for intermittently feeding a stylus in an upright position to said socket,

`and automatically releasable means for retaining the inserted stylus in its holder.

11. A stylus changing mechanism com-- prising stylus pulling and discharging devices coacting with each other, a common support therefor, a stylus retaining means, releasing means therefor, a shiftable carrier common to said support and releasing means, a stylus inserting device, a stylus feeding device, operating ineans for and a shut-o for the feeding device connected to the carrier, operating mechanism common to said inserting device and releasing means actuated from said carrier, and means carried by a sound box for shifting said carrier.

12. A stylus changing mechanism comprising a pivoted spring controlled stylus pulling device, a stylus discharging device coacting with said pulling device to discharge the stylus therefrom, a common support for said devices, a stylus retaining means, releasing means therefor, a shiftable carrier common to said support and releasing means, said support pivoted to said carrier, means for shifting the support on the carrier, a pivoted stylus inserting device, a stylus feeding device coacting with said inserting device and including a shut-off, said shut-ofi' connected to the carrier, operating means on the carrier for the feeding device, operating mechanism common to said inserting device, said retaining means Aactuated from said carrier, and means carried by a sound box for shifting said carrier.

13. A stylus changing mechanism comprising a pivoted, spring controlled stylus pulling device, a stylus discharging device arranged in the path of the pulling device and providing for the discharge of a stylus from the latter, a common support for said devices, a stylus retaining means, releasing means therefor, a spring controlled shiftable carrier common to said support and releasing means, a pivoted stylus inserting device, a. stylus feeding device coacting with said inserting device and including a shutolf, said shut-off connected to t-he carrier, operating means on the carrier for said feeding device, spring controlled operating mechanism common to said inserting device and releasing means and actuated from the carrier, means for pivotally connecting said support to the carrier, means for shifting said support on the carrier, and means carried by a sound box for shifting said carrier.

14. A stylus changing mechanism comprising stylus pulling and discharging devices coacting with each other, a common support therefor, a stylus retaining means, releasing means therefor, a shiftable carrier common to said support and releasing means, a stylus inserting device, a stylus feeding device, operating means for and a shut-off for the feeding device connected to the carrier, operating mechanism common to said inserting device and releasing means actuated from said carrier, a spring controlled handle member for connection to a sound box and providing means for shifting said carrier, and a housing for said carrier and inserting and feeding devices, said housing provided With a slot for the passage of said member.

15. A stylus changing mechanism comprising a pivoted spring controlled stylus pulling device, a stylus discharging device coacting with said pulling device to discharge the stylus therefrom, a common support for said devices, a stylus retaining means, releasing means therefor, a shiftable carrier common to said support and releasing means, said support pivoted to said carrier, means for shifting the support on the carrier, a pivoted stylus inserting device, a stylus feeding device coacting with said inserting device and including a shut-olf, said shut-olf connected to the carrier, operating means on the carrier for the feeding device, operating mechanism common to said inserting device, said retaining means actuated from said carrier, a spring controlled handle member for connection to a sound box and providing means for shifting said carrier, and a housing for said carrier and inserting and feeding devices, said housing provided with a slot for the passage of said member.

1G. A stylus changing mechanism comprising a pivoted, spring controlled stylus pulling device, a stylus discharging device arranged in the path of the pulling device and providing for the discharge of the stylus from the latter, a common support for said devices, a stylus retaining means, releasing means therefor, a spring controlled shiftable carrier common to said support and releasing means, a pivoted stylus inserting device, a stylus feeding device coacting With said inserting device and including a shut-olf, said shut-off connected to the carrier, operating means on the car 1ier for said feeding device, spring controlled operating mechanism common to said inserting device and releasing means and actuated from the carrier, means for pivotally connecting said support to the carrier, means for shifting said support on the carrier, a spring controlled handle member for connection to a sound box and providing means for shifting said carrier, and a housing for said carrier and inserting and feeding' devices, said housing provided with a slot for the passage of said member.

17. A stylus changing mechanism comprising stylus pulling and discharging devices coacting With each other, a common support therefor, stylus retaining means, releasing means therefor, a shiftable carrier common to said support and releasing means, a stylus inserting device, a stylus feeding device, operating means for and a shut-olf for the feeding device connected to the carrier, operating mechanism common to said inserting device and releasing means actuated from said carrier, a spring controlled handle member for connection to a sound box and providing means for shifting said carrier, a housing for said carrier and inserting and feeding devices, said housing provided with a slot for the passage of said member, and 4means secured to one of the Walls of said housing for suspending said carrier.

18. A stylus changing mechanism comprising a pivoted spring controlled stylus pulling device, a stylus discharging device coacting llO with said pulling device to discharge the stylus therefrom, a common support for said devices, a stylus retaining means, releasing means therefor', a shiftahle carrier common to said support and releasing means, said support pivotcd to said carrier, ineans for shifting the support on the carrier, a pivoted stylus inserting device, a stylus feeding device coacting with said inserting device and including a shut-off, said shuteoiiI connected to the carrier, operating means on the carrier for the feeding device, operating mechanism common to said inserting device, said retaining means actuated from said carrier, a spring controlled handle member for connection to a sound looX and providing means for shifting said carrier, a housing for said carrier and inserting and feeding devices, said housing provided with a slot for the passage of said member, and means secured to one of the Walls of said housing for suspending said carrier.

19. A stylus changing mechanism coinprising a pivoted, spring controlled stylus pulling device, a stylus discharging device arranged in the path of the pulling device and providing for the discharge of the stylus from the latter, a common support for said devices, a stylus retaining means, releasing means therefor, a spring controlled shiftable carrier common to said support and releasing means, a pivoted stylus inserting device, a stylus feeding device coacting With said inserting device and including a shut-off, said shut-oitl connected to the carrier, operating means on the carrier for said feeding device, spring controlled operating mechanism common to said inserting device and releasing means and actuated from the carrier, means for pivotally connecting said support to the carrier, means for shifting Asaid support on the carrier, a spring controlled handle me1nber for connection to a sound box and providinO means for shiftino' said carrier a housing for said carrier and inserting and feeding devices, said housing provided With a slot for the passage of said member, and means secured to one of the Walls of said housing for suspending said carrier.

ln testimony whereof, I afiiX my signature hereto.

KATOK ARAKAWA. 

